Rose disease
In May, I planted a #1 "Eden" Climber rose. (Seattle area) June was
unusually hot for the NW, and less rainfall than usual. Rose has been kept moist and regular fungicide sprays. At planting time, I used Osmocote 18-6-12, and after blooming began, I used Osmocote 14-14-14. (only one application of each). The bush gets about 6 hours sunlight daily. Daily highs in the 70's to low 80's and nightly lows in mid 50's. My problem is this: At first, buds and blooms were prolific. Then, buds started turning brown before they opened. The bud pedals eventually drop off the bush after turning brown (without ever fully opening). Right now, there are lots of buds, all of which are brown and beginning to loose pedals. Any suggestions would be appreciated Ed |
Rose disease
.. Then, buds
started turning brown before they opened. The bud pedals eventually drop off the bush after turning brown (without ever fully opening). Right now, there are lots of buds, all of which are brown and beginning to loose pedals. Any suggestions would be appreciated Ed Sounds like botrytis, which is my archenemy. Spray with any one of the recommended solutions, such as Banner Maxx. Scopata Fuori "Bad Cat!" |
Rose disease
In article MGgQa.52482$N7.6576@sccrnsc03, Ed
wrote: In May, I planted a #1 "Eden" Climber rose. (Seattle area) June was unusually hot for the NW, and less rainfall than usual. Rose has been kept moist and regular fungicide sprays. At planting time, I used Osmocote 18-6-12, and after blooming began, I used Osmocote 14-14-14. (only one application of each). The bush gets about 6 hours sunlight daily. Daily highs in the 70's to low 80's and nightly lows in mid 50's. My problem is this: At first, buds and blooms were prolific. Then, buds started turning brown before they opened. The bud pedals eventually drop off the bush after turning brown (without ever fully opening). Right now, there are lots of buds, all of which are brown and beginning to loose pedals. Any suggestions would be appreciated Ed Botrytis. This is what a mild infection looks like after the blooms open: http://home.earthlink.net/~cbernstei...s/botrytis.jpg A serious infection looks like this: http://www.rosefog.us/hipbadprickles...hGardenBad.JPG And the buds when infected look like this: http://home.earthlink.net/~cbernstei...trytisbuds.jpg Do a google search of botrytis rose. My Eden Climber, aka Pierre de Ronsard, loses the spring flush every year to botrytis. The blooms make a big mass of petals and must be cleaned up religiously. Don't let them age to the point of getting polka dots or brown edges, much less fall off and lie on the ground. I'm sorry to say that apart from climate change, I know of no solution for botrytis other than spraying fungicide or removing the plant. Extremely healthy roses that produce a mass of flowers are susceptible under the right climatic conditions: cool and damp. You can start a very disciplined systematic spray program and rid your garden of this blight now. Then you can try to be on the lookout for botrytis in the future and clean up all the failed buds and spent blooms before they show the polka dots of botrytis. I'm afraid that in certain climates, the fungus is widespread in the environment and that roses with buds that sit on the plant for a long time can be infected from outside the rose garden. This is my opinion only, derived from finding botrytis in my garden on roses that are a long distance (50 feet) from other roses with botrytis during an atypically cool, damp spring. There is a single, most effective fungicide for botrytis, available by mail order at great expense. It may not be approved for use in Washington. |
Rose disease
Thanks for the info - The second web-site (
http://www.rosefog.us/hipbadprickles...hGardenBad.JPG ) looks EXACTLY like the buds on my climbing Eden. I guess that by other's standards, Seattle has been cool and damp this spring, however we here in Microsoft land think it's been unusually warm and dry :} I'll spray, and if that doesn't take care of it, I think it would probably be best just to dispose of the bush and try something else. - or pack it up and move to San Diego Again, thanks for the detailed explanation. Ed "Cass" wrote in message .. . In article MGgQa.52482$N7.6576@sccrnsc03, Ed wrote: In May, I planted a #1 "Eden" Climber rose. (Seattle area) June was unusually hot for the NW, and less rainfall than usual. Rose has been kept moist and regular fungicide sprays. At planting time, I used Osmocote 18-6-12, and after blooming began, I used Osmocote 14-14-14. (only one application of each). The bush gets about 6 hours sunlight daily. Daily highs in the 70's to low 80's and nightly lows in mid 50's. My problem is this: At first, buds and blooms were prolific. Then, buds started turning brown before they opened. The bud pedals eventually drop off the bush after turning brown (without ever fully opening). Right now, there are lots of buds, all of which are brown and beginning to loose pedals. Any suggestions would be appreciated Ed Botrytis. This is what a mild infection looks like after the blooms open: http://home.earthlink.net/~cbernstei...s/botrytis.jpg A serious infection looks like this: http://www.rosefog.us/hipbadprickles...hGardenBad.JPG And the buds when infected look like this: http://home.earthlink.net/~cbernstei...trytisbuds.jpg Do a google search of botrytis rose. My Eden Climber, aka Pierre de Ronsard, loses the spring flush every year to botrytis. The blooms make a big mass of petals and must be cleaned up religiously. Don't let them age to the point of getting polka dots or brown edges, much less fall off and lie on the ground. I'm sorry to say that apart from climate change, I know of no solution for botrytis other than spraying fungicide or removing the plant. Extremely healthy roses that produce a mass of flowers are susceptible under the right climatic conditions: cool and damp. You can start a very disciplined systematic spray program and rid your garden of this blight now. Then you can try to be on the lookout for botrytis in the future and clean up all the failed buds and spent blooms before they show the polka dots of botrytis. I'm afraid that in certain climates, the fungus is widespread in the environment and that roses with buds that sit on the plant for a long time can be infected from outside the rose garden. This is my opinion only, derived from finding botrytis in my garden on roses that are a long distance (50 feet) from other roses with botrytis during an atypically cool, damp spring. There is a single, most effective fungicide for botrytis, available by mail order at great expense. It may not be approved for use in Washington. |
All times are GMT +1. The time now is 11:43 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
GardenBanter